First report on identification and genetic characterization of Getah virus in wild boar in China
文献类型： 外文期刊
作者： Huang, Jian 1 ; Song, Deping 2 ; Wei, Jiazhen 3 ; Xie, Baobao 4 ; Yang, Qun 5 ; Xu, Jun 5 ; Zhang, Fanfan 5 ;
作者机构： 1.Jiangxi Acad Agr Sci, Inst Qual & Safety & Stand Agr Sci, Key Lab Agroprod Qual & Safety Jiangxi Prov, Nanchang, Jiangxi, Peoples R China
2.Jiangxi Agr Univ, Coll Anim Sci & Technol, Nanchang, Jiangxi, Peoples R China
3.Jiangxi Biol Vocat Coll, Dept Anim Sci, Nanchang, Jiangxi, Peoples R China
4.Dabeinong Technol Co Ltd Jiangxi, Nanchang, Jiangxi, Peoples R China
5.Jiangxi Acad Agr Sci, Inst Anim Husb & Vet Med, Key Lab Green & Hlth Breeding Livestock & Poultry, Nanchang, Jiangxi, Peoples R China
关键词： Getah virus; epidemiology; genomic sequencing; phylogenetic analysis; wild boar
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：4.5； 五年影响因子：5.2 ）
ISSN：
年卷期： 2025 年 16 卷
页码：
收录情况： SCI
摘要： Getah virus (GETV) is a mosquito-borne Alphavirus that causes fever, rash and oedema in horses, fever, anorexia and neurological symptoms as well as piglet diarrhea deaths and reproductive disorders in sows in blue foxes, and the endemic areas are expanding progressively, especially in Asia and Oceania. In order to study the current epidemiological status of GETV in wild boar herds and its genetic and evolutionary patterns, we conducted a survey and genomic analyses of GETV in pig herds. The results showed that 74.02% (57/77) of the samples tested (n = 77) were positive for GETV, with the highest positivity rate of 100% in visceral tissue samples from diarrheic piglets and aborted fetuses, and also for the first time, the presence of GETV was detected in milk and semen. The complete genome of the representative GETV strain JX2024 was determined, and genome wide and E2 gene evolution tree results showed that the representative strain belonged to subtype GIII. Multiple comparison analysis showed that the E2 gene of JX2024 differed at the amino acid level by 96.4% to 99.5% compared with the reference GETV strain, and that the mutation of arginine to lysine at position 253 was the key amino acid site for the enhanced virulence of GETV. This analysis bridges the gap between the molecular epidemiological data and the genetic variation of GETV in wild boar and provides a basis for further understanding of the spread of GETV in China.
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